Can I have dhcp server running on leaf switches configured with mlag?

  • 19 March 2020
  • 1 reply

I need to setup DHCP server in SN2100 switch which runs cumulus 4.00. My switches are configured with mlag.

My server is configured with LACP, where port 1 of server is connected to switch1 and port 2 to switch 2. How can I set the DHCP server in such a way that if switch1 goes down and at that time the server rebooted switch should be able to handle the DHCP request and able to assign IP to the second port of server.

1 reply

Userlevel 5

It is possible to do this but we do not document it currently. Essentially you create two active/active DHCP servers which communicate with each other to keep in sync so if one dies the other has a complete picture.

You can follow the guide here to see just how to do it →


I do it on my home network with the same software and have had a good experience.